Carbon-set form



March 28, 1950 F. J. HAUER CARBON-SET FORM 2 Sheets-Sheet 1 OriginalFiled Dec. 8, 1945 INVENTOR FRANK J. HAUER Y ATTO RNEY5 March 28, 1950F. .J. HAUER CARBON-SET FORM 2 Sheets-Sheet 2 Original Filed Dec. 8,1945 INVENTOR FRANK J. HAUER ATTORNEY Reissued Mar. 28, 1950 UNITEDSTATES PATENT OFFICE CARBON-SET FORM Frank J. Hauer, Dayton, Ohio 7Claims.

This invention relates to writing forms and particularly to a carbon setform comprising'a sheet of writing paper in combination with a carbontransfer sheet.

The particular object of this invention is to provide an improved meansfor making carbon copies of written or printed material.

Another object is to provide a carbon sheet in combination with a copysheet which is more easily insertedinto and removed from a typewriter orother machine.

Still another object is to provide a form con-- sisting of a sheet ofpaper and a carbon sheet attached thereto in which the carbon sheet'mayreadily be removed by the operator without the paper sheet'becomingsmudged.

Still another object is to provide a set. form consisting of a sheet ofpaper and a carbon transfer sheet attached thereto by adhesive fromwhich the carbon sheet may readily be detached and used as a shield whenit is necessary, to make an erasure.

These and other objects and advantages will become more apparent uponreference to thefols lowing specification taken together with theaccompanying drawings in which:

Figure 1 is a perspective view showing the inn proved set form of myinvention;

Figure 2 is a view showing a typing machine having an original sheet andthe set. form of this invention mounted therein;

Figure 3 is a view illustrating the carbon sheet being detached from itssheet of paper preparatory to making an erasure;

Figure 'l is a view showing the carbon sheet In which may be of anystandard size suchas letter size and which has associated therewith acarbon sheet I2. The sheets are secured together along their upper edgesit by suitable adhesive means such as at 16in Figure? or at I 8 inFigure 8 The carbon sheet is coated on the side adjacent the paper fortransferringprinted matter thereto and includes an uncoated margin 20'adjacent Matter enclosed in heavy brackets I: 1 appears in the originalpatent but forms no part of this reissue Specification; matter printedin italics indicates the additions made by reissue the upper edge andthe uncoated margin 22 adjacent'the lower edge. The coated portion be-'-tween the margins 2t! and 22 is amply suliicient for all ordinarywriting requirements.

Extending inwardly'irom the sides of the carbon'sheet and at an angle ofabout 75, there are a pair of cuts or incisions N that lie within theuncoated margin 25. The purpose of the incisions 24 is to permit theoperator to detach the carbon sheet I2 from the sheet is when the formis in a machine for the purpose of making erasures. This is accomplishedby placing the thumb on one of the tabs indicated at 25 which are formedby the incisions 24 and thereafter passing the thumb between the sheetsalong the adhesive strip. It will be noted that this operation can beaccomplished without the operator coming into contact with the coatedsurface of the carbon paper and without the sheet Ill becoming smudgedby the paper.

The utility of the tabs 25 is better illustrated in Figures 2 through 4wherein there is shown a platen of a machine and an original sheet'and aset form according to this invention inserted therearound.

In Figure 2 the sheets are in writing position and in Figure 3 the bail28 has been moved outwardly from the platen 383 to permit the originalsheet 32 to be spaced from the set form.

Thereafter, the operator places his or her thumb on one of the tabs 26.When this is done a slight pressure will cause the incision to open andthe nail of the thumb may then be slid under thecarbon sheet and passedbetween the sheets along the full length thereof thereby severing thecarbon sheet I2 from the sheet of paper ill. The tabs ZEare next foldedforward on both sides of the carbon sheet for a purpose which willbecome more apparent hereinafter.

Then, to make the erasure, the sheet I2 is folded back; as shown inFigure 4, to bring the uncoated marginal portion 2!] thereof under thepoint at which an. erasure is to be made. The uncoated portion protectsthe second sheet from the carbon coating and the erasure may be madewithout the use of ashield. When the erasure has been made onthe'original and also. on the sheet It], the carbon'sheet is replacedin'its original position by grasping the now extended tabs 26 andpulling the carbon sheet back into its original position. Subsequenterasures may be made in the same manner except that it. is not necessaryto detach thecarbon from its sheet or to fol'd 'theitabs 2t.v It will beapparent. that "this.

methodrof making. erasures is convenient, require ing no shield or othermeans to protect the copy, may be accomplished without the operator'sfingers becoming smudged, and does not dislocate the carbon and papers.

After the typing has been completed and the sheets are removed from themachine, the carbon sheet is separated from the paper in the mannerillustrated in Figures 5 and 6.

When the paper is removed, the operator grasps the form at the extremeright or left with the thumb on one of the tabs 34 which is formed bythe incisions 36 that extend into the uncoated margin 22. Theseincisions are preferably about 1 or 1 in length and extend on about a 25angle and are placed 1%" from each edge of the carbon sheet. Preferably,the incisions are inclined toward the center of the paper from the edgefor greater convenience in separating the carbon paper sheets.

After the operator has grasped the form as shown in Figure 5, theintermediate tab 38 between the incisions will be extended somewhat awayfrom the paper sheet ID. This may then be grasped by the thumb andforefinger of the hand and then the thumb and forefinger which aregrasping the form at the tab 34 may be shifted into their Figure 6position where they grasp only the paper sheet In. Then, with aseparating motion of the hands, the carbon paper may be detached fromits sheet. It will be evident that the separating of the carbon and thepaper sheets may be accomplished without the smudging of the operatorsfingers or of the paper and in a minimum of time.

While it is preferred to employ a one time car- .bon sheet in order tofully realize the advantages of this invention, it will be evident thata carbon sheet constructed according to this invention comprising theuncoated top and bottom margins with their associated incisions could beemployed a number of times if desired. In either event the advantagesassociated with the uncoated margins and the incisions and tabs formedthereby would prevail.

It will also be evident that forms constructed according to thisinvention with the carbon sheet secured to the copy sheet would beeasier to align and insert into a writing machine, that the letter heador other form employed would not be defaced or smudged by inserting orremoving carbon sheets. Accordingly, a saving of time is realized andimproved einciency results for both experienced and inexperiencedmachine operators.

It will be understood that this invention is susceptible to modificationin order to adopt it to difierent usages and conditions and,accordingly, it is desired to comprehend such modifications within thisinvention as may fall within the scope of the appended claims.

I claim:

1. In a set form including a paper sheet and 'a carbon sheet ofsubstantially the same size; adhesive means securing said sheetstogether along the upper edges; uncoated marginal portions at the topand bottom of said carbon sheet extending completely across the widththereof; and diagonal incisions at each side of each of said uncoatedmarginal portions for facilitating the severing of said adhesivconnection and the separating of the sheets.

2. In a set form, the combination of a paper sheet and a carbon sheet ofthe same size secured thereto by adhesive along their upper edges, thesaid carbon sheet comprising uncoated top and bottom marginal portions;a diagonal incision extending across the upper of said uncoated marginalportions from the edge of the carbon paper toward the center forpermitting the thumb to be inserted between the sheets and to be passedtherebetween for severing the said adhesive connection; and incisionsextending across the said lower uncoated marignal portion adjacenteither edge of the carbon paper but spaced therefrom to form thumb tabswhereby the sheet may be separated by first grasping both of the sheetsby the said tab by one hand and thereafter grasping the sheetsintermediate the tabs one with one hand and one with the other andpulling them apart.

3. As a new article of manufacture; a carbon sheet having uncoatedportions extending thereacross at the top and bottom margins thereof; anincision extending diagonally into said upper margin from each side ofsaid sheet; and other incisions extending across said other uncoatedmarginal portion from the lower edge of said sheet, said last mentionedincisions being adjacent the side edges of the carbon sheet but spacedtherefrom to form thumb tabs at the lower corners of said sheet.

4. In a set form, the combination of a paper sheet and a carbon sheethaving their longitudinal edges substantially in alignment and securedtogether by adhesive along a transverse edge, the said carbon sheethaving a diagonal slit in at least one longitudinal edge adjacent theadhesively secured transverse edge, said diagonal slit extending fromthe said one longitudinal edge of the carbon sheet toward the centerthereof whereby to form in the carbon sheet an attached thumb tabadiacent the adhesively secured edge, said carbon sheet being positionedupon said paper sheet with the paper sheet providing a backing for saidthumb tab whereby to permit insertion of an instrument between thesheets through the slit for severing the sheets along the transverseadhesively secured edges.

5. In a set form, the combination of a paper sheet and a carbon sheethaving their longitudinal edges substantially in alignment and securedtogether by adhesive along a transverse edge, the said carbon sheethaving a diagonal slit in each of said longitudinal edges adjacent theadhesively secured transverse edge, said diagonal slits extending fromsaid longitudinal edges of the carbon sheet toward the center thereofwhereby to form in the carbon sheet an attached thumb tab adjacent theadhesively secured edge, said carbon sheet being positioned upon saidpaper sheet with the paper sheet providing a backing for said thumb tabwhereby to permit insertion of an instrument between the sheets througheither of the slits for severing the sheets along the transverseadhesively secured edges.

6. In a set form, the combination of a paper sheet and a carbon sheethaving their longitudinal edges substantially in alignment and securedtogether by adhesive along a transverse edge, the said carbon sheethaving an uncoated marginal portion at the adhesively secured transverseedge thereof, a diagonal slit extending across said uncoated marginalportion from the edge of the carbon sheet toward the center thereofwhereby to form in the carbon sheet an attached thumb tab ada'accnt theadhesively secured edge, said carbon sheet being positioned upon saidpaper sheet with the paper sheet providing a backing for said thumb tabwhereby to permit insertion ofvan instrument between the sheets throughthe slit for severing the sheets along the transverse adhesively securededges.

7. In a set form, the combination of a paper sheet and a carbon sheethaving their longitudinal ledges substantially in alignment and securedtogether by adhesive along a transverse edge, the said carbon sheethaving an uncoated marginal portion at the adhesivelg secured transverseedge thereof, a diayonaJl slit extending across said uncoated marginalportion from the edge of the carbon sheet toward the center thereofwhereby to form in the carbon sheet on attachedsubstantially triangularshaped thumb tab in said uncoated marginal portion for grasping betweenthe fingers to separate the carbon sheet'from the paper sheet, saidcarbon sheet being posi- REFERENCES CITED The following references areof record in the file of this patent or the original patent.

UNITED STATES PATENTS Number Name Date 2,178,878 McAdams Nov. 7, 19392,246,984 Palmer June 24, 1941 2,394,553 Kerr Feb. 12, 1946

